Summary statistics for ASC_BGN_SRVC_DT variable in pos2011 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
ASC_BGN_SR~T |      6,955    14277.81    2970.607     -27140      18947

by Jean Roth , jroth@nber.org , 19 Apr 2019